200308135 0) 玖、發明說明 【發明所屬之技術領域】 本發明是關於一種直流後備電源裝置，特別是關於一 種具備在電流與直流路之間進行電力充放電的充放電電路 的直流後備電源裝置的改良。 【先前技術】 習知，因商用交流電源力一停電，而在有發生資料喪 失等災害顧慮的伺服器、路由器、儲存器裝置等的所謂網 路資訊處理裝置中，則在外部設置UPS (無停電電源裝置 ；Uninterruptible Power System)，進行停電對策。其中 ，對於安裝於稱爲1 9吋線架的寬約4 8 0 m m的線架的線 架安裝型式的資訊處理裝置，有可安裝於相同線架內的線 架安裝型式UPS也被成品化。此爲有如APC日本公司的 「Smart — UPS」型錄上可看到的形狀尺寸。此爲交流後 備電源裝置，將交流電力從二次電池經由反相器與變壓器 輸出至負荷，以維持負荷的動作者。 另一方面，作爲將直流從交流電源經由AC/ DC換流 器及DC/ DC換流器供給於負荷者的直流後備電源，眾知 有曰本特開2000- 197347號公報。在該公報中，提案將 直流後備電源裝置連接在兩換流器的中間直流路，則可提 高變換效率，並可減低容積及成本。 但是，作爲二次電池一般使用於UPS的密封型鉛電 池是較低廉，惟有體積較大，對安裝在資訊處理裝置等的 -8 - (2) (2)200308135 課題。而且在資訊處理裝置等中，爲了確保其信賴性，作 爲後備電源，被要求雙重或三重冗餘系統，尺寸變更大， 而安裝上的缺點問題是較確實。 又，密封型鉛電池是含有鉛之故，因而也有作爲廢棄 物給予環境上不良影響的課題。 【發明內容】 本發明的目的是在於提供一種經薄型化的直流後備電 源裝置。具體而言，可得到將1至14 KVA電容的直流後 備電源裝置可安裝於19吋線架的一單元尺寸的高度45 mm以下薄型者。 本發明的第1項特徵爲，屬於具備：電池，及在該電 池與直流路之間進行電力的充放電的充放電電路，及控制 該充放電電路的控制電路的直流後備電源裝置，其特徵爲 :上述電池是具備多數電池格，此此電池格的圓筒部配置 成爲大約水平狀態倒臥者。 本發明的第2項特徵爲，在此些電池組，使用具有較 高能量密度的鎳氫（NiMH)二次電池。 藉由此種構成，後備電源每一台，內設高度約43 mm ，直徑大約22.5 mm的副一 C( Sub — C)尺寸的多數鎳氫 電池之故，因而可實現薄型的直流後備電源裝置。 具體而言’爲了確保每一台的額定輸出700W以上， 藉由內設40格以上的鎮氫電池，成爲可避免薄型化形成 瓶頸的密封型鉛電池。結果，在19吋線架的1單元（！ u -9 - (3) (3)200308135 )尺寸可容納兩台後備電源。此時，至少並聯連接兩組以 上上述鎳氫電池。 又，將容納於上述1 9吋,線架的1 U尺寸的台數作爲 三台，也可以將每一台的額定輸出作成400W以上。這時 候，藉由內設20格以上Sub— c尺寸的鎳氫電池就可實 現。 又，本發明的其他特徵爲，電池的滿充電電壓在48 V 以內時，將與上述直流路亦即充放電電路的連接點的電壓 設定在51V至55V作爲特徵者。 又’對於發生停電時的負荷裝置的後備時間，藉由使 用鎳氫電池，在電池溫度1 (TC以上，且電池的內部阻抗 爲初期値的兩倍以下，且滿充電狀態的條件下，可保證額 定電力的6分鐘以上的輸出。 本發明的其他目的，特徵及優點是由有關於所附圖式 的以下的本發明的實施例記載就可明瞭。 【實施方式】 第1圖是表示依本發明的第一實施形態的直流後備電 源裝置（U P S )與資訊處理裝置安裝於1 9时線架的狀況 的立體圖。在第1圖中，41是1 9吋線架，容納有資訊處 理裝置26成爲6段χ2單元=12單元分量的高度。在其 最下部的1單元分量的高度空間內，安裝有依本發明的第 一實施形態的兩台直流後備電源裝置i。由該圖可知在些 微空間內容納兩台直流後備電源裝置i。又，前面可看到 -10- (4) (4)200308135 的記號3的線架安裝固定具；4是[ED ; 1 2是空氣孔；1 9 是抽出柄。 第2圖是僅表示依本發明的第一實施形態的直流後備 電源裝置的外觀的立體圖。如圖示，直流後備電源裝置i 是形成並排兩台可安裝於框體的形狀，可分別個別地抽出 。直流後備電源裝置1的橫寬L是約225 mm以下，高度 H2是44 mm以下，縱深D是600 mm以下。框體2的高 度H2是1單元（1U)，亦即約44.45 mm，亦即成爲可裝 載在所謂1 9吋線架的尺寸。在框體2，左右地安裝有線 架安裝固定具3，又，在直流後備電源裝置1的正面，如 上述地，具備LED 4與空氣孔12及抽出柄19。 第3圖是表示打開本實施形態的直流後備電源裝置1 的蓋子，從上方向觀看其內部的俯視圖。在第3圖中，第 1、2圖相同構成要素賦予相同記號。在圖中，並排有兩 個電池組件5在縱深方向，而在此些的正前方安裝有：裝 載有線圖8、電解電容器9、散熱坐1 1的充放電電路6及 裝載微電腦1 〇的控制電路7的基板。在背面側設有冷卻 風扇13、連接器20、21、及開關22。 第4圖是表示使用於本實施形態的直流後備電源裝置 的電池組件5內部的電池格構成的立體圖。在圖中，電池 格1 5是有7格朝橫方向藉由導電材1 8串聯地連接’而該 組有四組並排於縱方向。又在各電池格之組間設有絕緣片 14。如此地，在正電極與負電極^7之間均串聯連接有 合計28個電池格。電池格15是每一格使用高約43 mm， (5) (5)200308135 直徑約225 mm的Sub— C尺寸的鎳氫電池。因此，電池 組件的尺寸是橫方向爲約160 mm，縱方向爲約180 mm， 厚度爲約2 5 m m。如此地，電池組件5安裝於直流後備電 源裝置1形態，是配置成厚度方向成爲高度方向。亦即， 電池組件1 5的圓筒部配置成爲大約水平狀態倒臥形狀。 由此’成爲可實現高度1U尺寸的直流後備電源裝置。 第5圖是表示從線架背面觀看本實施形態的直流後備 電源裝置與資訊處理裝置之連接關係的外觀的立體圖。在 圖中，在與第1圖至第3圖相同構成要素賦予相同記號。 在資訊處理裝置26的背面設有兩台裝置電源25。在該裝 置電源25背面，設有AC插頭27、電源開關28之外，連 接器29、柄30及冷卻風扇31。在資訊處理裝置26背面 ，還設有兩個連接器33。另一方面，在框體2安裝有兩 台直流後備電源裝置1。框體2與資訊處理裝置26是被 裝載在相同1 9吋線架。裝置電源25與直流後備電源裝置 1是從連接器29分別經由直流電力•信號電纜24、連接 器2 1相連接。又，資訊處理裝置26與直流後備電源裝置 1是從連接器33分別經由信號電纜23及連接器20相連 直流後備電源裝置1的發熱是主要發生在放電時。此 時控制電路7是旋轉冷卻風扇丨3而從正面的空氣孔12以 充放電電路6、電池組件、冷卻風扇1 3的路徑流通風， 來冷卻直流後備電源裝置1。 第6圖是表示圖示於第i圖至第5圖的第一實施形態 • 12 - (6) (6)200308135 的直流後備電源裝置1與資訊處理裝置之間的電氣式連 關係的方塊圖。在圖中，在與第1圖至第5圖相同構成 素賦予相同記號。直流後備電源裝置1內部的電池組件 是被連接於充放電電路6，同時將電源及信號供給/輸 至充放電電路6的控制電路7。充放電電路6的輸出端 是被連接於連接器2 1。又，控制電路7是被連接於連 器20與連接器21。如在第5圖所述，在資訊處理裝置 的內部，內設有兩台裝置電源25。此些裝置電源25是 備AC / DC換流器34與DC / DC換流器35。將直流電 從交流電源32經由AC插頭27、AC/ DC換流器34、 DC / DC換流器35供給於負荷39。兩台的裝置電源25 形成完全相同構成，其輸出並聯地連接於負荷39。負 3 9是包括有控制電路3 6、磁碟3 7及記憶體3 8。又， 置電源25內的AC/DC換流器34與DC/DC換流器 的連接點被連接於連接器29。此外，AC/ DC換流器的 率優異信號被連接於連接器29。連接器29是經由直流 力•信號電纜24被連接於直流後備電源裝置1的連接 21。又，負荷39內的控制電路36是被連接於連接器 ，而經由信號電纜23被連接於直流後備電源裝置1的 接器20。 控制電路7是經常地監視電池組件之狀態，並控制 放電電路的充電電流。又，在電池組件5成爲滿充電狀 時，從控制電路7停止充放電電路6的動作。兩台直流 備電源裝置1是分別成爲相同構成，個別地把握電池組 -13- (7) (7)200308135 5的狀態而進行充電控制。又，藉由在滿充電狀態停止充 放電電路6的動作，防止所謂涓流充電，可得到鎳氫電池 的長壽命化。 在此，考慮2 8格X 2並聯二5 6格充電至鎳氫電池1 5 ，則公稱1 2 V的格是在其滿充電附近達到1 6 V，而電 池組件5的端子電壓，是在28格成爲44.8 V。這時候， 若將中間直流路29的設定電壓亦即直流後備電源裝置1 的輸出端子2 1的設定電壓設定在無法維持電池組件5的 端子電壓44 8 V。此乃由於依AC/DC換流器34的控制 誤差± 10%的直流輸出電壓的參差不齊、或電路的壓降所 導致。如此，在本發明的實施形態中，將中間直流路29 的電壓中心値（設計値），具有多餘地設定在54 V，而 考量上述參差不齊或壓降，也能確實地保持充電電壓。但 是，一般若設定在5 1 V至5 5 V，則沒有問題。 第7A、7B、7C圖是表示本實施形態的直流後備電源 裝置的動作狀態的簡略化方塊圖。在圖中，在與其他圖相 同構成要素賦予相同記號。如在第6圖所述地，商用交流 電源3 2是有二系統，惟此爲相同的交流電源也可以，或 是其中一方是連接於發電機或大容量的無停電電源裝置等 也可以。此些商用電源32在雙方均爲健全狀態時，直流 後備電源裝置1是在充電狀態或等待狀態。 第7A圖是表示充電狀態的方塊圖，有兩種電力路徑 。第1電力路徑是從商用交流電源32經AC/DC換流器 34、DC/DC換流器35而供給於負荷39的路徑。另一路 (8) (8)200308135 徑是從AC / D C換流器3 4的輸出點，經直流後備電源裝 置1的充放電電路6而充電電池組件5的電力路徑。AC /DC換流器34的輸出點的電壓，是大約DC 48 V (或上 述的51至55 V)較理想。在其他的12 V或24 V也可實 現，惟在與負荷39的電力電容相比較電壓較低時，該分 量會增加電流之故，因而需增厚直流電力•信號電纜24 〇 另一方面，也可將既存於一般性AC/ DC換流器34 內的PFC (功率改善電路）的輸出的DC 3 SO V作爲該輸 出點。但是，這時候也必須注意直流後備電源裝置或電力 •信號電纜24的絕緣與48 V (或上述的51至55 V)系 統相比較變困難之處。 第7B圖是表示本實施形態的截峰功能時的電力路徑 的方塊圖。該截峰功能是在健全商用交流電源3 2時，若 有超過預定値的負荷電流流在DC/ DC換流器35之際， 除了從AC/ DC換流器34供電的電力之外也具有從直流 後備電源裝置1側供給電力的控制手段者。該控制手段是 藉由充放電電路6與控制電路7所構成。由此，可將AC / D C換流器3 4的輸出電流抑制在預定値以內。結果’除 了可將AC/ DC換流器的額定電容抑制較低之外，也可將 從商用交流電源3 2所輸入的電流抑制成較低之故’因而 可發揮減低電力均値化或契約電力等的用戶優點。 第7C圖是表示停電時的電力路徑的方塊圖。在本實 施形態中，接受AC/ DC換流器34的功率優異信號而開 (9) (9)200308135 始放電之故’因而不僅對於停電，即使對於AC/ DC換流 器@故障也藉由完全同樣的順序可將電力供給予以後備至 負荷。由此可更提高裝置的信賴性。 以下’說明商用交流電源3 2停電時的動作。當商用 交流電源32停電時，則會降低AC/ DC換流器34的輸出 電壓’惟此時在AC/ DC換流器內部的功率優異信號變更 成異常狀態信號。此乃如上述地，在AC / D C換流器3 4 有故障時也可能相同。該功率優異信號的變化，是從連接 器29藉由直流電力•信號電纜24、連接器21的路徑， 電氣式地傳送至直流後備電源裝置1內的控制電路7。直 流後備電源裝置1是接受功率優異信號的變化而開始充放 電電路6的放電動作。這時候，電池組件5的直流電力， 藉由充放電電路6的昇壓斬波器被電力變換成特定的48 V (或是上述的51至55 V)，並被輸出至AC/DC換流 器3 4的輸出點。昇壓斬波器是可使用由線圈8，安裝於 散熱坐1 1的功率MOSFET等的半導體裝置及電解電容器 9所構成的公知電路。 如在第4圖所述地，本實施形態的電池組件5，是以 鎳氫電池28格的串聯體，而且並聯連接兩個該串聯體加 以使用。該端子間電壓是視狀態而變化’惟公稱電壓是 3 3.6 V ( 1 2 V/格）。由該電池欲得到穩定的48 V (或 是上述的51至55 V)的電力變換電路有幾種’惟如上述 地，昇壓斬波電池最簡便。 第8圖是表示將有關於本實施形態的鎳氫電池格數作 (10) (10)200308135 爲參數，電池最大可供給電力及直流後備電源裝置的最大 可供給電力，以及後備時間的關係的圖表。該圖表是設定 使用Sub — C尺寸的鎳氫（NiMH )電池，充放電電路的效 率爲90 %，在內部阻抗成爲初期値兩倍的電池劣化時， 而且1 〇 °C的低溫的過嚴條件。由此可知，爲了構成在 70 0W輸出而在6分鐘可後備的後備電源，需要40格50 格之間的電池板。第8圖是如上述地以最不好條件輸出所 需的圖表，作爲初期値，以40格就可充分地具有700W 輸出X6分鐘的後備。但是在上述最不好條件下爲了確實 地保有以700 W輸出具6分鐘後備的用途，仍需準備大約 45格以上的電池較理想。 问樣地’由％ 8圖就可明瞭》在400W輸出χ6分鐘 ，或是500W輸出X 5分鐘（在第8圖以虛線表示）後備 的規格上，必須有20至3 0格。因此，由與上述同樣的理 由，可知需要20格以上，較理想爲28格左右。 又，以第8圖觀看以上述第一實施形態的Sub— C尺 寸的鎳氫電池15使用28格X 2並聯=56格的直流後備電 源裝置的後備能力。條件是充放電電路6的效率爲90% ，電池爲內部阻抗劣化至兩倍的狀態下，作爲1 0 °C的低 溫的過嚴條件。可後備的輸出，是在電池最大爲約1 0 00 W X 3分鐘以內，約 920WX 5分鐘（以虛線表示），約 8 80 Wx 6分鐘左右，而考慮電源效率，則可知爲約790W X 6分鐘。該電容是充分地凌駕在初期狀態可後備一般性 1 kVA交流UPS爲670至700WX 6分鐘的規格，比得上 (11) (11)200308135 在初期狀態可後備1 2 kVA交流UPS爲84 OWx 6分鐘的 規格。因此，第一實施形態的直流後備電源裝置，是具有 與1.2 kVA的交流UPS大約等値的後備能力。 又，本實施形態的直流後備電源裝置1，是在進行後 備之際，經由AC/ DC換流器未予給電之故，因而僅AC /DC換流器的效率分量更有效率提高交流UPS。換言之 ，在與交流UP S相同電容的後備電源的情形，也可以比 交流UPS更增加AC/ DC換流器的效率分量的後備時間 。此乃例如以AC/DC換流器的效率作爲90%，而以交 流UPS的後備時間作爲6分鐘，則在相同電容的後備電 源時，可確保6分鐘/ 0.9=6.6分鐘的後備時間。 又，在本實施形態中，從發生停電一直到4 8 V (或 上述的51至55 V)輸出的切換動作是在數100 //s以內 進行。所以，DC/DC換流器35的輸入是不會有很大變 動，而DC/ DC換流器35是與停電無關係地動作。所以 ，負荷3 9是可穩定地繼續動作。 停電在較短時間內解決，而復電商用交流電源3 2時 ，AC/DC換流器34的功率優異信號從異常狀態變成通 常狀態之故，因而在控制電路7捕捉該信號之變化而停止 放電。 又，電池組件的殘留電容（SOC )是藉由控制電路7 經常地被監視。該SOC是藉由主要累計對於電池組件的 充電電流或是放電電流可加以推定。在繼續停電’降低電 池組件5的SOC時，則控制電路7是對於控制電路36 (12) 200308135 入停機動 3 7的動作 停機信號 機信號而 形。在直 停止充放 未圖示， 蜂音器來 被傳動至 用戶是如 流後備電 閉背面的 出。之後 1，並如 行導通。 施形態的 交流電源 的路徑之 備電源裝 輸出停機信號。在控制電路3 6接收該信號而進 作。該動作是如將記憶體3 8的內容躲避在磁碟 〇 當終了停機動作，則控制電路36是將UPS 輸出至控制電路7。控制電路7是接受該UP S停 停止來自電池組件的放電動作。 以下，說明直流後備電源裝置1有故障的情 流後備電源裝置1有故障之際，則控制電路7是 電電路7的動作，而藉由LED 4發生警報。雖 惟該警報是藉由安裝於直流後備電源裝置1內的 進行也可以。又，將直流後備電源裝置1的故障 控制電路3 6，而從裝置側傳動至用戶也可以。 此地認識直流後備電源裝置1的故障，而更換直 源裝置1。直流後備電源裝置1的更換順序是關 開關22，拉掉電纜，而藉由由柄19朝正前方抽 ，如第1、2圖地插入正常的直流後備電源裝置 第5圖地，將電纜類配線在連接器，使得開關進 這時候，不必停止負荷的資訊處理裝置。在本實 直流後備電源裝置，如第6圖所示地，從商用 3 2有直流後備電源裝置1並聯地進入在負荷3 6 故，因而在仍使負荷動作之狀態下可插拔直流後 置1。 第9圖是表示將依本發明的第一實施形態的直流後備 電源裝置的大小與市售中的幾個線架安裝型交流UP S相 (13) (13)200308135 比較的圖表。該圖是表示直流後備電源裝置的輸出電力w 與UP S的高度的關係。如在圖以〇標記標繪地，線架安 裝型交流UP S的高度’是19吋線架的高度節距爲約 44.45 mm(lU)之故，因而一般成爲約44 mm(lU)， 或約88 mm(2U)......。但是，交流UPS是變壓器， 反相器或密封型鉛電池的體積成爲瓶頸之故，因而高度最 低的1 U尺寸的UP S是僅存在輸出的較小的4 0 0 W以下 者。生產台數較多的1至14 kVA (大約相當於700至 1,000 W)的線架安型交流 UPS，是每一台佔有2 U - 3 U 的高度。然而，資訊處理裝置是爲了提升安裝密度有年年 變成薄型化，而在最近發表了 1 U尺寸的伺服器，而提高 了提昇整體線架的安裝密度的要求。 對於此，如在第9圖以鲁標誌（a )標繪地，依照本 發明的第一實施形態，可將生產台數較多的1至1 4 kVA (大約相當於7〇〇至1，000 W)的線架安裝型直流UPSx 2 台容納於1 U。 以下，使用第1〇圖至第12圖說明依本發明的第二實 施形態的直流後備電源裝置。 第1 〇圖是表示依本發明的第二實施形態的直流後備 電源裝置的形狀的外觀立體圖，基本上與第2圖相同之故 ’因而僅說明不同處。在圖中，表示可將三台的直流後備 電源裝置1安裝於框體2，框體2的高度H2是與第1圖 相同爲1 U。因此，直流後備電源裝置1的高度H1也與 第1圖相同爲44 mm以下。直流後備電源裝置1的寬度 (14) (14)200308135 爲L2是150 mm以下。 第1 1圖是表示依本發明的第二實施形態的直流後備 電源裝置1的內部構成的俯視圖。充放電電路6與控制電 路7是與第3圖相同尺寸，惟L 2形成狹窄至150 mm以 下之故，因而從前視圖依控制電路7、充放電電路6、電 池組件5的順序配置。 第1 3圖是表示電池組件5的內部構造的電池構成立 體圖。電池組件5是未並聯連接，而串聯Sub - C尺寸的 3 0格鎳氫電池的構成。在一列排列五個電池格，而將該 電池格縱向地疊成六組，並將絕緣片1 4夾在此些之間的 構成，在兩端設有正電極1 6及負電極1 7。該電池組件的 尺寸，是縱約270 mm，而寬度約115 mm。又，厚度約 25 mm，可安裝在第11圖的尺寸。 該第二實施形態的直流後備電源裝置1的動作是與第 一實施形態的動作相同。但是，每一台的電容不相同。針 對於此使用第8圖加以說明。在第8圖中，包括在電池組 件5的Sub— C尺寸的鎳氫電池是30格。在這裏，以充 放電電路6的效率作爲90%，而在電池一直劣化至內部 阻抗兩倍的狀態下，在1 〇 °C低溫可後備的輸出是如下所 述。如圖示地，電池最大在約 55 OWx 3分鐘以內，約 480WX 6分鐘程度，考慮電源效率時爲430 Wx 6分鐘。 此乃凌駕 500 VA ( 3 50W )的交流UPS的輸出，比得上 700 VA ( 490 W )的交流UPS的初期性能。因此，該第二 實施形態的直流後備電源裝置1輸出，是在劣化時，具 -21 - (15) (15)200308135 有後備保證作爲700 VA的交流UPS的初期値的電容的能 力。 如在第9圖以#標誌（b )標繪地，具有上述的43 〇 W X 6分鐘的後備能力的第二實施形態的直流後備電源裝 置1，是可容納三台於19吋線架的1單元（1 u )尺寸的 高度內。 在這裏，考量充電至3 〇格的鎳氫電池1 5，則在接近 滿充電是每一格成爲1 · 6 V之故，因而電池組件5的端子 電壓，是30格成48 V。這時候，中間直流路29的設定 電壓亦即直流後備電源裝置1的輸出端子2 1的設定電壓 ，是必須設定成至少高於電路的壓降分量以上。如此，在 本發明的第二實施形態，將中間直流路29的電壓設定在 54 V，又考量依AC / DC換流器34的調整所引起的參差 不齊或電路的壓降，也可具餘裕地保持充電電壓。 在本實施形態的後備電源，充電，放電及斬峰的各功 能，是與第一實施形態相同地也可動作。 依照以上的實施例，藉由將線架安裝型式的交流UP S 置換成本實施形態的直流後備電源裝置，以更薄型尺寸的 1 U尺寸可實現相同電容的後備功能。結果，可增加系統 裝置，資訊處理裝置，伺服器等的安裝台數。亦即，可增 加此些負荷裝置的電容，結果，成爲可提高線架的安裝密 度。 又，在以上的實施形態中，欲進行直流後備電源裝置 內部的二次電池或其他的零件的保養更換之際，藉由背後 -22- (16) (16)200308135 的連接器與電纜的接觸遠離，可以一台一台地活線插撥直 流後備電源裝置1，而可實現負荷無停止，無瞬斷的更換 作業。 又，在該直流後備電源裝置中，藉由使用斬峰功能， 可減低輸入電力的均値化或契約電力，而可減低AC / D C 換流器的額定電容，可以得到低成本化。 又，廢止密封型鉛電池，藉由使用鎳氫電池，減輕廢 棄時的環境負荷而可提供安全的裝置。 依照本發明，可以用薄型尺寸實現直流後備電源裝置 ，而成爲可容易地安裝於系統裝置，資訊處理裝置或伺服 器等。 又，廢止密封型鉛電池，而使用鎳氫電池時，可減輕 廢棄時的環境負荷而可提供安全的裝置。 上述記載是針對於實施例而作業，惟本發明是並不被 限定於此者’熟習該項技術者，在本發明的精神與所附申 請專利範圍的範圍內可進行各種變更及修正。 【圖式簡單說明】 第1圖是表不安裝依本發明的第一實施形態的直流後 備電源裝置的線架的安裝形態的立體圖。 第2圖是表不依本發明的第一實施形態的直流後備電 源裝置的外觀立體圖。 第3圖是表示依本發明的第一實施形態的直流後備電 源裝置的俯視圖。 -23- (17) (17)200308135 第4圖是表不依本發明的第一實施形態的直流後備電 源裝置的電池構成立體圖。 第5圖是表不從線架背面觀看依本發明的第一實施形 態的直流後備電源裝置與資訊處理裝置之連接關係的外觀 立體圖。 第ό圖是表示依本發明的第一實施形態的直流後備電 源裝置與資訊處理裝置之連接關係的方塊圖。 第7Α圖、第7Β圖、第7C圖是表示依本發明的實施 形態的直流後備電源裝置的動作狀態的方塊圖。 第8圖是表示依本發明的第一實施形態的直流後備電 源裝置的最大可供給電力與後備時間的關係，以電池格數 作爲參數的圖表。 第9圖是表示依本發明的第一實施形態的UP S的高 度與輸出電力關係的習知比較圖。 第1 〇圖是表示依本發明的第二實施形態的直流後備 電源裝置的外觀立體。 第1 1圖是表示依本發明的第二實施形態的直流後備 電源裝置的俯視圖。 第1 2圖是表示依本發明的第二實施形態的直流後備 電源裝置的電池構成立體圖。 〔主要元件對照表〕 1 直流後備電源裝置 2 框體 -24- (18)200308135 3 線架安裝固定具 4 LED 5 電池組件 6 充放電電路 7,36 控制電路 8 線圏 9 電解電容器 10 微電腦 11 散墊坐 12 空氣孔 13,31 冷卻風扇 14 絕緣片 15 電池格 16 正電極 17 負電極 18 導電材 19,30 柄 20,2 1,29,3 3 連接器 22 開關 23 信號電纜 24 直流電力•信號電纜 25 裝置電源 26 資訊處理裝置 27 AC插頭200308135 0) 发明. Description of the invention [Technical field to which the invention belongs] The present invention relates to a DC backup power supply device, and more particularly, to a DC backup power supply device provided with a charging and discharging circuit for charging and discharging electric power between a current and a DC circuit. Improvement. [Prior art] It is known that, due to a power outage due to a commercial AC power source, in so-called network information processing devices such as servers, routers, and storage devices that are concerned about disasters such as data loss, a UPS (no Power interruption power supply device; Uninterruptible Power System). Among them, for a wire rack installation type information processing device installed on a wire rack with a width of about 480 mm called a 19-inch wire rack, there is also a wire rack installation type UPS that can be installed in the same wire rack. . This is the size that can be seen in the "Smart — UPS" catalog of APC Japan. This is an AC backup power supply device that outputs AC power from the secondary battery to the load through the inverter and transformer to maintain the load. On the other hand, Japanese Patent Application Publication No. 2000-197347 is known as a DC backup power source for supplying a direct current from an AC power source to an loader via an AC / DC converter and a DC / DC converter. In this bulletin, it is proposed to connect a DC backup power supply device to the intermediate DC circuit of the two converters, which can improve the conversion efficiency and reduce the volume and cost. However, the sealed lead-acid battery generally used in UPS as a secondary battery is relatively inexpensive, but has a large size, and is a problem for -8-(2) (2) 200308135 installed in information processing equipment. In addition, in order to ensure the reliability of information processing equipment, as a backup power source, a dual or triple redundant system is required, the size of which changes greatly, and the disadvantages of installation are more reliable. In addition, since sealed lead batteries contain lead, there is also a problem of adversely affecting the environment as a waste. SUMMARY OF THE INVENTION An object of the present invention is to provide a thinned DC backup power supply device. Specifically, a DC backup power supply device with a capacitance of 1 to 14 KVA can be obtained, which can be mounted on a 19-inch wire frame with a unit height of 45 mm or less. A first feature of the present invention is a DC backup power supply device including a battery, a charge / discharge circuit that charges and discharges power between the battery and a DC circuit, and a control circuit that controls the charge and discharge circuit. The above-mentioned battery is provided with a plurality of battery cells, and the cylindrical portion of this battery cell is arranged to be lying in a horizontal state. A second feature of the present invention is that these battery packs use a nickel-hydrogen (NiMH) secondary battery having a high energy density. With this structure, each of the backup power supplies has a built-in height of about 43 mm and a diameter of about 22.5 mm. Most of the nickel-metal hydride batteries of the sub-C (Sub-C) size can realize a thin DC backup power supply device. . To be specific, in order to ensure that each unit has a rated output of 700 W or more, a built-in 40-cell or more hydrogen-storage battery is used to form a sealed lead battery that can avoid thinning and forming a bottleneck. As a result, one unit (! U -9-(3) (3) 200308135) in a 19-inch wire rack can accommodate two backup power supplies. At this time, at least two or more of the above-mentioned nickel-hydrogen batteries are connected in parallel. In addition, the number of 1 U-sized units accommodated in the above-mentioned 19-inch wire racks is three, and the rated output of each unit can be made 400W or more. At this time, it can be achieved by using a built-in Ni-MH battery with a size of more than 20 cells. In addition, another feature of the present invention is that when the full charge voltage of the battery is within 48 V, the voltage at the connection point with the DC circuit, that is, the charge / discharge circuit is set to 51V to 55V as a feature. Also, for the backup time of the load device in the event of a power outage, by using a nickel-metal hydride battery, the battery can be used at a battery temperature of 1 (TC or higher, and the internal impedance of the battery is less than twice the initial value, and under a fully charged state. The output of rated power is guaranteed for more than 6 minutes. Other objects, features, and advantages of the present invention will be apparent from the following description of the embodiments of the present invention related to the drawings. [Embodiment] FIG. A perspective view of a state in which a DC backup power supply device (UPS) and an information processing device according to the first embodiment of the present invention are installed on a wire rack at 19 o'clock. In the first figure, 41 is a 19-inch wire rack, which houses the information processing device. 26 becomes a 6-segment χ2 unit = 12 unit height. In the space of the lowest 1 unit height, two DC backup power supply devices i according to the first embodiment of the present invention are installed. As can be seen from the figure, Some micro-spaces contain two DC backup power supply units i. In addition, you can see the wire rack installation fixture of the symbol 3 at -10- (4) (4) 200308135; 4 is [ED; 1 2 is an air hole; 1 9 is withdrawn handle Fig. 2 is a perspective view showing only the external appearance of the DC backup power supply device according to the first embodiment of the present invention. As shown in the figure, the DC backup power supply device i is formed in a shape that can be mounted on a frame side by side, and can be individually installed Draw out. The width L of the DC backup power supply device 1 is about 225 mm or less, the height H2 is 44 mm or less, and the depth D is 600 mm or less. The height H2 of the frame 2 is 1 unit (1U), that is, about 44.45 mm, That is, it can be mounted on a so-called 19-inch wire rack. On the frame 2, left and right wire rack mounting fixtures 3 are installed, and on the front side of the DC backup power supply device 1, as described above, it is provided with LEDs 4 and air. The hole 12 and the extraction handle 19. Fig. 3 is a plan view showing the inside of the DC backup power supply device 1 when the cover is opened and viewed from above. In Fig. 3, the same components as in Figs. In the figure, two battery modules 5 are arranged side by side in the depth direction, and directly in front of these are installed: a load cable 8, an electrolytic capacitor 9, a charge / discharge circuit 6 of a heat sink 11 and a microcomputer 1 〇 Control circuit 7 Substrate. Cooling fan 13, connectors 20, 21, and switch 22 are provided on the back side. Figure 4 is a perspective view showing the structure of a battery cell inside the battery module 5 of the DC backup power supply device of the present embodiment. In the battery cell 15 there are 7 cells connected in series in the horizontal direction by conductive materials 18 and the group has four groups side by side in the vertical direction. An insulating sheet 14 is provided between the groups of the battery cells. A total of 28 battery cells are connected in series between the positive electrode and the negative electrode ^ 7. Battery cell 15 is a Sub-C size with a height of about 43 mm per cell, (5) (5) 200308135 and a diameter of about 225 mm. Ni-MH battery. Therefore, the dimensions of the battery module are about 160 mm in the horizontal direction, about 180 mm in the vertical direction, and about 2 5 mm in thickness. In this manner, the battery pack 5 is mounted on the DC backup power supply device 1 and is arranged so that the thickness direction becomes the height direction. That is, the cylindrical portion of the battery module 15 is arranged in an inverted shape in a substantially horizontal state. As a result, it becomes a DC backup power supply device capable of realizing a height of 1U. Fig. 5 is a perspective view showing an external appearance of a connection relationship between the DC backup power supply device and the information processing device according to the present embodiment as viewed from the back of the wire frame. In the figure, the same components as those in FIGS. 1 to 3 are given the same symbols. Two device power sources 25 are provided on the back of the information processing device 26. On the back of the device power supply 25, there are provided a connector 29, a handle 30, and a cooling fan 31 in addition to the AC plug 27 and the power switch 28. On the back of the information processing device 26, two connectors 33 are also provided. On the other hand, two DC backup power supply devices 1 are installed in the housing 2. The housing 2 and the information processing device 26 are mounted on the same 19-inch wire rack. The device power supply 25 and the DC backup power supply device 1 are connected from a connector 29 via a DC power / signal cable 24 and a connector 21 respectively. The information processing device 26 and the DC backup power supply device 1 are connected from the connector 33 via the signal cable 23 and the connector 20, respectively. The heat generated by the DC backup power supply device 1 mainly occurs during discharge. At this time, the control circuit 7 is a rotating cooling fan 3, and air is flowed from the front air hole 12 through the path of the charge and discharge circuit 6, the battery pack, and the cooling fan 13 to cool the DC backup power supply device 1. Fig. 6 is a block diagram showing the electrical connection relationship between the DC backup power supply device 1 and the information processing device of the first embodiment shown in Figs. I to 5-12-(6) (6) 200308135 . In the figure, the same components as those in FIGS. 1 to 5 are given the same symbols. The battery pack inside the DC backup power supply device 1 is connected to the charge / discharge circuit 6 and supplies / outputs power and signals to the control circuit 7 of the charge / discharge circuit 6 at the same time. The output terminal of the charge / discharge circuit 6 is connected to the connector 21. The control circuit 7 is connected to the connector 20 and the connector 21. As shown in Fig. 5, two device power sources 25 are provided inside the information processing device. These device power sources 25 are AC / DC converters 34 and DC / DC converters 35. DC power is supplied from the AC power source 32 to the load 39 via the AC plug 27, the AC / DC converter 34, and the DC / DC converter 35. The two device power sources 25 have identical configurations, and their outputs are connected in parallel to a load 39. Negative 39 includes control circuit 36, magnetic disk 37, and memory 38. A connection point between the AC / DC converter 34 and the DC / DC converter in the power source 25 is connected to the connector 29. In addition, an excellent rate signal of the AC / DC converter is connected to the connector 29. The connector 29 is a connection 21 connected to the DC backup power supply device 1 via a DC power / signal cable 24. The control circuit 36 in the load 39 is connected to a connector, and is connected to the connector 20 of the DC backup power supply device 1 via a signal cable 23. The control circuit 7 constantly monitors the state of the battery pack and controls the charging current of the discharge circuit. When the battery pack 5 is fully charged, the operation of the charge / discharge circuit 6 is stopped from the control circuit 7. The two DC backup power supply devices 1 each have the same configuration, and individually control the state of the battery pack -13- (7) (7) 200308135 5 to perform charging control. In addition, by stopping the operation of the charge / discharge circuit 6 in a fully charged state, so-called trickle charging is prevented, and the life of the nickel-metal hydride battery can be extended. Here, consider 28 cells X 2 parallel two 56 cells to be charged to the nickel-metal hydride battery 1 5, then the nominal 12 V cell will reach 16 V near its full charge, and the terminal voltage of the battery component 5 is between 28 divisions become 44.8 V. At this time, if the setting voltage of the intermediate DC circuit 29, that is, the setting voltage of the output terminal 21 of the DC backup power supply device 1 is set to a terminal voltage of 44 8 V which cannot maintain the battery pack 5. This is due to the unevenness of the DC output voltage according to the control error of the AC / DC converter 34 ± 10%, or the voltage drop of the circuit. In this way, in the embodiment of the present invention, the voltage center 値 (design 値) of the intermediate DC circuit 29 is set to 54 V redundantly, and the charging voltage can be reliably maintained in consideration of the above-mentioned unevenness or voltage drop. However, if it is set to 5 1 V to 5 5 V, there is no problem. Figures 7A, 7B, and 7C are simplified block diagrams showing the operating states of the DC backup power supply device of this embodiment. In the figure, the same symbols are assigned to the same constituent elements as in other figures. As shown in FIG. 6, the commercial AC power source 32 has two systems, but the same AC power source may be used, or one of them may be connected to a generator or a large-capacity non-interruptible power source device. When these commercial power sources 32 are both in a healthy state, the DC backup power supply device 1 is in a charging state or a waiting state. Figure 7A is a block diagram showing the state of charge. There are two types of power paths. The first power path is a path that is supplied from the commercial AC power source 32 to the load 39 via the AC / DC converter 34 and the DC / DC converter 35. The other path (8) (8) 200308135 is the power path for charging the battery pack 5 from the output point of the AC / DC converter 34 through the charging and discharging circuit 6 of the DC backup power supply device 1. The voltage at the output point of the AC / DC converter 34 is preferably about DC 48 V (or 51 to 55 V described above). It can also be realized at other 12 V or 24 V, but when the voltage is lower than the power capacitor of load 39, this component will increase the current, so the DC power and signal cable 24 need to be thickened. On the other hand, The DC 3 SO V of the output of the PFC (power improvement circuit) existing in the general AC / DC converter 34 may be used as the output point. However, you must also pay attention to the DC backup power supply unit or power at this time. • The insulation of the signal cable 24 is more difficult than that of the 48 V (or the above-mentioned 51 to 55 V) system. Fig. 7B is a block diagram showing a power path at the time of the peak cut function of this embodiment. When the commercial AC power source 32 is perfected, this peak-clamping function is provided in addition to the power supplied from the AC / DC converter 34 when a load current exceeding a predetermined threshold flows in the DC / DC converter 35. Control means for supplying power from the DC backup power supply device 1 side. This control means is constituted by a charge / discharge circuit 6 and a control circuit 7. As a result, the output current of the AC / DC converter 34 can be suppressed to within a predetermined range. As a result, in addition to reducing the rated capacitance of the AC / DC converter to a low level, it is also possible to suppress the current input from the commercial AC power source 32 to a low level. Therefore, it is possible to reduce the power leveling or contract. User advantages such as electricity. FIG. 7C is a block diagram showing a power path at the time of power failure. In this embodiment, the AC / DC converter 34 receives the signal of excellent power and is turned on (9) (9) 200308135, so it is not only for power outages, but also for AC / DC converter @ Failure. The exact same sequence can back up the power supply to the load. This can further improve the reliability of the device. Hereinafter, the operation when the commercial AC power source 32 is powered off will be described. When the commercial AC power supply 32 is powered off, the output voltage of the AC / DC converter 34 will be lowered. However, at this time, the power excellent signal inside the AC / DC converter is changed to an abnormal state signal. This is as described above, and may be the same even when the AC / DC converter 3 4 is faulty. This change in the excellent power signal is electrically transmitted from the connector 29 through the path of the DC power / signal cable 24 and the connector 21 to the control circuit 7 in the DC backup power supply device 1. The DC backup power supply device 1 starts the discharge operation of the charging / discharging circuit 6 upon receiving a change in the excellent power signal. At this time, the DC power of the battery pack 5 is converted into a specific 48 V (or the above-mentioned 51 to 55 V) by the boost chopper of the charge and discharge circuit 6, and is output to the AC / DC converter. The output points of the controller 3 4. The step-up chopper is a well-known circuit that can use a semiconductor device such as a coil 8 and a power MOSFET mounted on a heat sink 11 and an electrolytic capacitor 9. As shown in Fig. 4, the battery module 5 of this embodiment is a series of 28-cell nickel-metal hydride batteries, and two series-connected bodies are connected in parallel for use. The voltage between the terminals varies depending on the state ', but the nominal voltage is 3 3.6 V (12 V / div). There are several types of power conversion circuits that can obtain a stable 48 V (or the above-mentioned 51 to 55 V) from this battery. As mentioned above, a boost chopper battery is the simplest. FIG. 8 shows the relationship between the maximum number of batteries that can be supplied by the battery and the maximum power that can be supplied by the DC backup power supply device, and the backup time by using the parameters of the nickel-metal hydride battery in this embodiment as (10) and (10) 200308135. chart. This chart shows the use of a Sub-C size NiMH battery with a charge and discharge circuit efficiency of 90%. When the internal resistance becomes twice as much as the initial stage, the battery deteriorates and the temperature is too severe at 10 ° C. . It can be seen that in order to form a backup power supply that can be backed up in 6 minutes at an output of 70 0W, a battery board between 40 grids and 50 grids is required. Fig. 8 is a graph required for outputting in the worst condition as described above. As an initial stage, a reserve of 700 W output for 6 minutes can be sufficiently provided in 40 divisions. However, under the worst conditions mentioned above, in order to reliably maintain the use of 700 W output for 6 minutes, it is still desirable to prepare a battery of about 45 cells or more. Ask the sample site ‘It ’s clear from the% 8 chart.” There must be 20 to 30 divisions in the reserve specifications for 400W output x 6 minutes, or 500W output X 5 minutes (indicated by dashed lines in Figure 8). Therefore, for the same reasons as above, it is understood that 20 blocks or more are required, and about 28 blocks are more preferable. In addition, as shown in Fig. 8, the backup capacity of the DC-type backup power supply device of the Sub-C size nickel-metal hydride battery 15 in the first embodiment described above uses 28 cells X 2 in parallel = 56 cells. The condition is that the efficiency of the charge / discharge circuit 6 is 90%, and the battery is in a state where the internal impedance is degraded to twice, which is a severe condition of low temperature of 10 ° C. The backup output is within 3 minutes of a maximum of about 100 WX, about 920WX for 5 minutes (indicated by a dotted line), and about 8 80 Wx for about 6 minutes. Considering the power efficiency, it can be known that it is about 790W X for 6 minutes. . This capacitor is fully above the specifications that it can be backed up in the initial state. The general 1 kVA AC UPS is 670 to 700 WX for 6 minutes, which is comparable to (11) (11) 200308135 In the initial state, it can be backed up. 1 2 kVA AC UPS is 84 OWx 6 Specifications in minutes. Therefore, the DC backup power supply device of the first embodiment has a backup capacity approximately equal to that of an AC UPS of 1.2 kVA. In addition, the DC backup power supply device 1 of the present embodiment is not powered by the AC / DC converter during backup, so only the efficiency component of the AC / DC converter improves the AC UPS more efficiently. In other words, in the case of a backup power source with the same capacitance as the AC UP S, the backup time of the efficiency component of the AC / DC converter can be increased more than the AC UPS. For example, if the efficiency of the AC / DC converter is 90% and the backup time of the AC UPS is 6 minutes, the backup time of 6 minutes / 0.9 = 6.6 minutes can be ensured when the backup power of the same capacitor is used. In this embodiment, the switching operation from the occurrence of a power failure to 4 8 V (or the aforementioned 51 to 55 V) output is performed within a few hundred // s. Therefore, the input of the DC / DC converter 35 does not change much, and the DC / DC converter 35 operates independently of the power failure. Therefore, the load 39 can continue to operate stably. The power failure was resolved in a short time, and when the commercial AC power supply 32 was re-energized, the power excellent signal of the AC / DC converter 34 changed from the abnormal state to the normal state, so the control circuit 7 caught the change of the signal and stopped. Discharge. The residual capacitance (SOC) of the battery pack is constantly monitored by the control circuit 7. This SOC can be estimated by mainly accumulating a charging current or a discharging current for a battery module. When the power failure is continued, and the SOC of the battery pack 5 is lowered, the control circuit 7 is in the form of a stop signal to the control circuit 36 (12) 200308135. When the charging and discharging are not stopped, the buzzer will be driven to the user. After that, it turns on as before. The standby power supply of the path of the AC power supply in the form of output outputs a shutdown signal. The control circuit 36 receives this signal and operates. This operation is to hide the contents of the memory 38 from the magnetic disk. When the shutdown operation ends, the control circuit 36 outputs the UPS to the control circuit 7. The control circuit 7 stops the discharging operation from the battery pack upon receiving the UP S. In the following, the case where the DC backup power supply device 1 is faulty will be described. When the backup power supply device 1 is faulty, the control circuit 7 is operated by the electric circuit 7 and an alarm is generated by the LED 4. This alarm may be performed by being installed in the DC backup power supply device 1 only. The fault control circuit 36 of the DC backup power supply device 1 may be transmitted from the device side to the user. The failure of the DC backup power supply device 1 is recognized here, and the direct power supply device 1 is replaced. The replacement sequence of the DC backup power supply device 1 is to turn off the switch 22, pull off the cable, and pull it toward the front by the handle 19. Insert the normal DC backup power supply device as shown in Figures 1 and 2, as shown in Figure 5, and connect the cables. The wiring is at the connector, so that it is not necessary to stop the load of the information processing device at this time. In this actual DC backup power supply device, as shown in FIG. 6, the commercial 3 2 has a DC backup power supply device 1 connected in parallel to the load 3 6. Therefore, the DC back-up device can be plugged in while the load is still operating. 1. Fig. 9 is a graph comparing the size of the DC backup power supply device according to the first embodiment of the present invention with several commercially available wire rack-mounted AC UP S phases (13) (13) 200308135. This figure shows the relationship between the output power w of the DC backup power supply device and the height of the UP S. If the ground is marked with 0 in the figure, the height of the wire rack-mounted AC UP S is 19 feet. The height of the wire pitch is about 44.45 mm (lU), so it is generally about 44 mm (lU), or Approx. 88 mm (2U) ... However, the AC UPS is a transformer, and the volume of the inverter or sealed lead-acid battery becomes a bottleneck. Therefore, the smallest 1 U size UP S is the smaller 400 W which only has output. The 1 to 14 kVA (approximately 700 to 1,000 W) wire-frame safety AC UPS with a large number of production units each has a height of 2 U-3 U. However, information processing devices are becoming thinner every year in order to increase the installation density. Recently, a 1-U size server has been released, which has increased the requirement to increase the installation density of the overall wire frame. In this regard, if the Lu mark (a) is plotted in FIG. 9, according to the first embodiment of the present invention, the number of production units can be 1 to 14 kVA (approximately equivalent to 700 to 1, 000 W) wire rack-mounted DC UPSx 2 units accommodate 1 U. Hereinafter, a DC backup power supply device according to a second embodiment of the present invention will be described with reference to Figs. 10 to 12. Fig. 10 is an external perspective view showing the shape of the DC backup power supply device according to the second embodiment of the present invention, which is basically the same as that of Fig. 2 'and therefore only the differences will be described. The figure shows that three DC backup power supply units 1 can be mounted on the frame 2. The height H2 of the frame 2 is 1 U as in the first figure. Therefore, the height H1 of the DC backup power supply device 1 is also 44 mm or less as in the first figure. The width of the DC backup power supply unit 1 (14) (14) 200308135 is 150 mm or less for L2. Fig. 11 is a plan view showing the internal configuration of a DC backup power supply device 1 according to a second embodiment of the present invention. The charge / discharge circuit 6 and the control circuit 7 are the same size as in FIG. 3, but L 2 is formed to be as narrow as 150 mm or less. Therefore, the control circuit 7, the charge / discharge circuit 6, and the battery pack 5 are arranged in order from the front view. FIG. 13 is a perspective view of a battery configuration showing the internal structure of the battery module 5. FIG. The battery pack 5 is a 30-cell nickel-metal hydride battery of a series Sub-C size that is not connected in parallel. Five battery cells are arranged in a row, and the battery cells are vertically stacked into six groups, and an insulating sheet 14 is sandwiched therebetween. A positive electrode 16 and a negative electrode 17 are provided at both ends. The size of the battery module is about 270 mm in length and 115 mm in width. It has a thickness of about 25 mm and can be installed in the size shown in Figure 11. The operation of the DC backup power supply device 1 of the second embodiment is the same as that of the first embodiment. However, the capacitance of each unit is different. This is explained using FIG. 8. In FIG. 8, the Sub-C size nickel-metal hydride battery included in the battery pack 5 is 30 cells. Here, the efficiency of the charge / discharge circuit 6 is taken as 90%, and in the state where the battery has been degraded to twice the internal impedance, the output that can be backed up at a low temperature of 10 ° C is as follows. As shown in the figure, the maximum battery is within about 55 OWx for 3 minutes and about 480WX for 6 minutes. When considering the power efficiency, it is 430 Wx for 6 minutes. This is the output of an AC UPS over 500 VA (350 W), which is comparable to the initial performance of an AC UPS of 700 VA (490 W). Therefore, the output of the DC backup power supply device 1 of the second embodiment has the capacity of -21-(15) (15) 200308135 to guarantee the capacity of the initial stage of an AC UPS of 700 VA when it is degraded. As shown in FIG. 9 with the # mark (b), the DC backup power supply device 1 of the second embodiment having the above-mentioned backup capacity of 43 GWX for 6 minutes is a 1 capable of accommodating three 19-inch wire racks. Within the height of the unit (1 u). Here, considering the nickel-metal hydride battery 15 charged to 30 grids, the battery voltage of the terminal of the battery module 5 is 30 grids to 48 V when the full charge is about 1.6 V per grid. At this time, the setting voltage of the intermediate DC circuit 29, that is, the setting voltage of the output terminal 21 of the DC backup power supply device 1, must be set at least higher than the voltage drop component of the circuit. Thus, in the second embodiment of the present invention, the voltage of the intermediate DC circuit 29 is set to 54 V, and the unevenness or the voltage drop of the circuit caused by the adjustment of the AC / DC converter 34 can also be considered. Maintain the charging voltage margin. In the backup power supply of this embodiment, the functions of charging, discharging, and peak-cutting can also operate in the same manner as in the first embodiment. According to the above embodiments, by replacing the AC stand-up type of the wire rack installation type with the DC backup power supply device of the embodiment, the backup function of the same capacitor can be realized with a thinner 1 U size. As a result, the number of installations of system devices, information processing devices, servers, etc. can be increased. That is, the capacitance of these load devices can be increased, and as a result, the mounting density of the wire frame can be increased. In addition, in the above embodiment, when the secondary battery or other parts in the DC backup power supply device are to be maintained and replaced, the connector on the back of the -22- (16) (16) 200308135 is in contact with the cable. If it is far away, the DC backup power supply device 1 can be plugged in one by one live line, and the load can be replaced without stopping and without interruption. Moreover, in this DC backup power supply device, by using the peak-cut function, it is possible to reduce the equalization or contract power of the input power, and to reduce the rated capacitance of the AC / DC converter, thereby reducing the cost. In addition, the use of nickel-metal hydride batteries can be abolished, and the use of nickel-metal hydride batteries can reduce the environmental load at the time of disposal and provide a safe device. According to the present invention, a DC backup power supply device can be realized with a thin profile, and can be easily installed in a system device, an information processing device, a server, or the like. In addition, the use of a sealed lead-acid battery is abolished. When a nickel-metal hydride battery is used, the environmental load at the time of disposal can be reduced, and a safe device can be provided. The above description is for the embodiment, but the present invention is not limited to those who are familiar with the technology, and can make various changes and modifications within the spirit of the present invention and the scope of the attached patent application. [Brief description of the drawings] Fig. 1 is a perspective view showing an installation form of a wire frame in which a DC backup power supply device according to a first embodiment of the present invention is installed. Fig. 2 is a perspective view showing the appearance of a DC backup power supply device according to the first embodiment of the present invention. Fig. 3 is a plan view showing a DC backup power supply device according to a first embodiment of the present invention. -23- (17) (17) 200308135 Fig. 4 is a perspective view showing a battery configuration of the DC backup power supply device according to the first embodiment of the present invention. Fig. 5 is an external perspective view showing the connection relationship between the DC backup power supply device and the information processing device according to the first embodiment of the present invention as viewed from the back of the wire frame. Fig. 6 is a block diagram showing a connection relationship between a DC backup power supply device and an information processing device according to the first embodiment of the present invention. Figures 7A, 7B, and 7C are block diagrams showing the operating states of the DC backup power supply device according to the embodiment of the present invention. Fig. 8 is a graph showing the relationship between the maximum available power of the DC backup power supply device and the backup time according to the first embodiment of the present invention, with the number of battery cells as a parameter. Fig. 9 is a conventional comparison diagram showing the relationship between the height and output power of the UP S according to the first embodiment of the present invention. Fig. 10 is a perspective view showing the external appearance of a DC backup power supply device according to a second embodiment of the present invention. Fig. 11 is a plan view showing a DC backup power supply device according to a second embodiment of the present invention. Fig. 12 is a perspective view showing a battery configuration of a DC backup power supply device according to a second embodiment of the present invention. [Comparison table of main components] 1 DC backup power supply unit 2 Frame -24- (18) 200308135 3 Wire frame mounting fixture 4 LED 5 Battery pack 6 Charge / discharge circuit 7, 36 Control circuit 8 Wire 9 Electrolytic capacitor 10 Microcomputer 11 Loose cushion seat 12 Air hole 13, 31 Cooling fan 14 Insulation sheet 15 Battery cell 16 Positive electrode 17 Negative electrode 18 Conductive material 19, 30 Handle 20, 2 1, 29, 3 3 Connector 22 Switch 23 Signal cable 24 DC power • Signal cable 25 Device power supply 26 Information processing device 27 AC plug
-25- (19) 200308135 28 電源開關 32 交流電源 34 AC/ DC換流器 3 5 D C / D C換流器 3 7 磁碟 3 8 記憶體 39 負荷 4 1 1 9吋線架-25- (19) 200308135 28 Power switch 32 AC power supply 34 AC / DC converter 3 5 DC / DC converter 3 7 Disk 3 8 Memory 39 Load 4 1 1 9 inch wire rack